Exhibition-cabinet for gas-burners



no Model.) 2 Sheets-Sheet 1.'

CHAMBERLAIN.

EXHIBITION CABINET FOR GAS BURNEBS.

No. 273,952. Patented Mar. 13,1883.

N, PL'rERs. Pholo-Lhhogn her. Washingon. ILC.

UNITED STATES rites.

l ATENT 7 EXHIBITION-CABINET FOR GAS-BURNERS.

SPECIFICATION forming part of Letters Patent No. 273,952, dated March 13, 1883. Applicationfiled J one 23, 1882. (No model.)

To all whom it may concern Be it known that I, JOHN N. CHAMBERLAIN, a citizen of the United States, residing at Springfield, in the county of Hampden and l State of Massachusetts, have invented new net for gas-burners, the object being to combine in a portable and convenient form a suit able gas-receptacle capable of receivingand deliverin g gas under varying pressures,with adistributing-pipe leading therefrom and adapted to support thereon and supply gas to a series of burners, and to afford connections and a support for apparatus for determining the quality and quantity of gas consumed and thevarying pressures under which it is delivcred toburners and by them consumed.

' In the drawings forming part of this specification, Figure 1 is a plan view, partly in section, and Fig. 2 is a front elevation, also partly in section, of a gas-burnerexhibition-case constructed according to my invention. Fig. 3 is an elevation of the right-hand side of the case shown in Fig. 2. Fig. 4. is a longitudiual'section of the valve-box interposed between the supply-pipe and the apparatus, and Fig. 5 is a vertical section through the line as m, Fig. at.

In the drawings, B indicates a properly-coustructed case,of box form, for holding the apparatus.

A is a double chambered gas reservoir, formed by securing a flexible diaphragm, a, between the two halves of its body in a wellknown manner. A rigid block or plate, 0, is secured to or within said diaphragm, extending from the center thereof toward the surrounding edges of said reservoir, said diaphragm andplate 0 being so adapted to each other and to the surrounding walls of said reservoir as to permit the plate and diaphragm 5 to be moved reciprocally up and down therein, whereby two chambers adapted to alternately receive and'discharge gas are formed. A piston-rod, a ,is secured to plate o,and passes up through the top of said reservoir, and is 50 provided with a slot, as shown, to permit of engaging the end of a 'hapdlever, a there with, saidhand-lever having a suitable fulcrum-support on a floor above said reservoir, as in Fig. 3. By operating said lever a the diaphragm in said reservoir is moved up and down therein.

A valve-box, 0 is located near to one side of reservoir A, provided with interior gas-passages, as shown in Figs. 4 and 5, and with hinged clapper-valves 2 3 4 5. The pipe (1, 6 Figs. 1, 2, 3, is the main gassupply pipe, and two pipes, e e, are led therefrom to said valvebox 0 and two pipes, a a, lead from the latter to said reservoir, one connecting with each of said chambers therein, and a pipe, 6 leads from the side of said valve-box, connecting the chamber within the latter with a-main distributing-pipe, e which'runs around the interior of the case.

The action of the clapper-valves in the box 0 while gas is flowing to pipe 0 through pipe e is as follows, viz: Gras flowing through the left-hand pipe 6 would open valve 2, and flow ing to the right in the direction of the arrow would flow against valve 3, opening that, and 7 pass out at 6 and if flowing through the lefthand pipe 0 it will open valve 5, flow across and open valve 4:, and out at 0 The action of said valves is, however, different when the diaphragm c of the reservoir A is operated to inhale gas into eitherthe upper or lower chamber thereof for the purpose of expelling it therefrom under pressure into the main burner supply pipe 6 without permit-ting any back flow in the pipes e e and (1. Therefore, sup- 8 posing the handle end of lever a be moved downward, causing the diaphragm c to. be,

drawn upward from the position it occupies in Fig. 2, the gas therein would beforced through pipe to into valve-box c shutting valve 5 and 0 the passage leading to pipe e, (at the right,) opening valve 4 and shutting valve 3., and thus forcing the flow of gas through pipe 6 under such pressure as the operator may desire. The upward movement of said diaphragm, asjust 5 described, causes valve 3 to close and opens valve 2, and creates a forced flow of gas from pipe 6 (at the left) through pipe a. into the lower chamber of the reservoir, and a downward movement of said diaphragm, whereby I00 gas is drawn through pipe 6 (at the right) into the upper chamber of said reservoir, shuts valve 4 and opens valve 5. Thus the office of said valve bx is to allow a free flow of gas from pipes e, through it and pipe 6 to pipe 0 and to permit gas to be forced from either the upper or lower chamber of the reservoir into pipe 0 without escaping through pipe 0, and to permit gas to flow into one of said chambers while being forced out of the other one.

The pipe 0 is adapted to be run around four or less sides of the exhibition-case B, as shown in Fig. 1, upon which are supported, on suitable stand-pipes, g, various burners, on

- others one or moreArgand burners, hflasiphon I and its connections located on the right-hand side of case B, and which is connected with the top of instrument (1 by pipe 0 (shown in both Figs. 2 and 3,) is shown in Fig. 3, in which 2" is a siphon pressure-gage connected by pipe 0 to a burner, just below its tip, for the purpose of determining the pressure therein while burning.

In Fig. 2, i is a second siphon-gage con- I neeted by a pipe, 0, to a burner at a different point from the last-named one. Said gagesz' and t" are operative only whenthe burners with which they are connected have gas flowing through them from pipe 0 The siphongage h indicates the pressure in pipe e When gas flows freely through pipes e, valve-box c", and pipe e to pipe 6 gas is burned in the several burners connected therewith at about the pressure existing in the gasmains from which it is drawn, and without means above described for varying the gaspressnre all experiments must be madeunder the gas-main pressure, which would be greatly inadequate to the requirements of a complete thereto a series of burneestands and burners and gas testing apparatus, as described, substantially as set forth.

JOHN N. CHAMBERLAIN.

Witnesses:

H. A. OHAPIN, WM. H. UHAPIN. 

